Document Type and Number:
Japanese Patent JPS4721987
Kind Code:
U
Application Number:
JP1423171U
Publication Date:
November 11, 1972
Filing Date:
March 08, 1971
Export Citation:
International Classes:
A44C25/00; A44C1/00; A44C17/00; G02B27/00; G02B27/02; G02F1/13; G02F1/1333; G09F9/00; G09F19/00; (IPC1-7): A44C25/00